Research Improvement

As the number of skills grows in game it would be great if already learned skills could be hidden from the research tables crafting list.

This way in small/solo servers when people become Jacks of Many Trades, it is clear which skills still need researching and which are already done, without having to open your skill panel to check certain things.

Seeing as you can make as many skill scrolls from a single book as you like, recreating the book would be a waste of time and resources.

For those afraid of losing the book and a friend joining later, a "show/hide" checkbox would probably be the best solution.